Drain.



No. 883,629. PATENTED MAR. 31, 1908.

A. F. DBNLER.

DRAIN.

APPLICATION FILED DB0. s. 1907.

AUGUST F. DENLER, OF BUFFALO, NEW YRK.

Specification of Letters Patent.

Patented March 31, 1908.

Application filed-December 6, 1907. Serial No. 405,412.

To all whom it may concern.'

Be it known that I, AUGUST F. DENLER, a

citizen of the United States, residing at Buffalo, in the county of Erie and State of New York, have invented new and useful Improvements in Drains, of which the following 1s a specliication.

Thls invention relates to drains for sewer pipes, and the object of the invention is to provide a drain having a valve so arranged as to allow the free passage of water into the sewer and to prevent the back pressure of the water within the sewer owing outward through the drain, when such back pressure occurs.

Another object of the invention is to provide a casting composed of separate parts so arranged as to be easily connected with each other to provide a drain for sewer pipes.

With these and other objects in view the invention resides in the novel construction of parts and their arrangement in o erative combination hereinafter fully described and claimed.

In the drawings, Figure l is a top plan v iew of a drain pipe constructed in accordance with my invention. Fig; 2 is a similar view with the perforated cover removed. Fig. 8 is a longitudinal section upon the line 3-3 of Fig. l, and Fig. 4 is a horizontal section upon the line 4--4 of Fig. 3.

In the accompanying drawings the numeral l designates a section of an ordinary sewer pipe, adapted to be secured u on a main sewer, an having its upper en provided with the threads 2 by which it is adapted to be connected with my improved drain. While I have shown the sewer pi e 1 provided with threads, it will of course, ide understood that I do not limit myself to this particular construction as the end of the pipe may be provided with the usual enlargement by which it is adapted to be calked to the drain, and this means of connecting the drain and pipe may', in some cases, be preferable.

My improved drain com rises a bowl shaped casting 3 havin a re uced pi e portion 3 connected with t e casting an being rovided with inwardly projecting teeth or ngers 4 adapted to act as a seat for a ball valve 5. The bowl shaped casting 3 is provided with an annular shoulder 5, adapted for the rece tion of a perforated cover or closure 6. he cover 6 is provided upon its under side with a deflector 7 secured to the cover b a bolt 8.

The mterior upper portion of the pipe 3, and the lower ortion of the casting 3 are provided with the screw threads 9 adapted to register with the threads 10 of a bushing 1l, whereby the bowl 3 and the ipe 4 are secured together and to the buslliling 11. The bushing l1 is provided with an upwardly eX- tending portion 12 adapted to normally lie beneath the deector 7 of the cover 6, and the bushing is provided upon its upper surface with an opening 13 of a cross sawed formation, as clearly illustrated in Fig. 2 of the drawings` The bushing 11 is hollow and is formed at its lower extremity with a semispherical portion, which is ada ted to act as a seat for the ball valve 5 when ack pressure within the sewer forces the ball valve upward and away from its seat u on the fingers 4 of the casting. The ball va ve 5 is constructed of some-light material so as to make it susceptible to the water rising Within the casting, and is of a size lesser than the diameter of the pipe section 3 so as to offer no resistance to the water flowing .through the drain.

From the above description it will be noted into the sewer that I have provided a simple and efficient drain for sewers which will effectively prevent the water of the sewer backing through the drain when rains or other causes result in the sewer being crowded beyond its capacity.

It will be further noted that with the construction for drains for sewer pipes illustratedand described a free inlet for water is resented, the shield or deiiector provided Ey the cover'effeetively preventing the sto page of the drain inlet to the sewer by stic s or other obstructions, land that the parts of the drain are so constructed and arranged as to be readily removable from each other and which provides means for the ready insertion or removal of the ball valve.

Having thus fully described the invention what is claimed as new is:

A drain for sewer pipe comprising a bowlshaped member having a pipe extension, In testimony whereof I affix my signature ners upon the iIterior of tlllle 1extensiohr, a in presence of two'witnesses. ba valve upon sai fingers 'a o oW bus w having a valve seat conneoting the boWl- AUGUST F' DENLER' 5 shaped member and the pipe extension, and Witnesses:

a perforated cover havin a deeetor remov- JOSEPH E. BACHMANN,

ably secured to the mout of the member. WILLIAM J. BACHMANN. 

